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AR052295A1 - A MULTIFUNCTION INJECTOR INTENDED FOR COMBUSTION IN THE METALLURGICAL TREATMENT OF IRON IN AN ELECTRIC ARC OVEN AND COMBUSTION PROCEDURE - Google Patents

A MULTIFUNCTION INJECTOR INTENDED FOR COMBUSTION IN THE METALLURGICAL TREATMENT OF IRON IN AN ELECTRIC ARC OVEN AND COMBUSTION PROCEDURE

Info

Publication number
AR052295A1
AR052295A1 ARP060100570A ARP060100570A AR052295A1 AR 052295 A1 AR052295 A1 AR 052295A1 AR P060100570 A ARP060100570 A AR P060100570A AR P060100570 A ARP060100570 A AR P060100570A AR 052295 A1 AR052295 A1 AR 052295A1
Authority
AR
Argentina
Prior art keywords
combustion
nozzle
acting
subsonic
multifunction
Prior art date
Application number
ARP060100570A
Other languages
Spanish (es)
Inventor
Francesco Memoli
Ferri Mauro Bianchi
Marcello Pozzi
Enrico Malfa
Original Assignee
Techint Spa
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Techint Spa filed Critical Techint Spa
Publication of AR052295A1 publication Critical patent/AR052295A1/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/32—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid using a mixture of gaseous fuel and pure oxygen or oxygen-enriched air
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/52—Manufacture of steel in electric furnaces
    • C21C5/5211—Manufacture of steel in electric furnaces in an alternating current [AC] electric arc furnace
    • C21C5/5217—Manufacture of steel in electric furnaces in an alternating current [AC] electric arc furnace equipped with burners or devices for injecting gas, i.e. oxygen, or pulverulent materials into the furnace
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/20—Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone
    • F23D14/22—Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone with separate air and gas feed ducts, e.g. with ducts running parallel or crossing each other
    • F23D14/24—Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone with separate air and gas feed ducts, e.g. with ducts running parallel or crossing each other at least one of the fluids being submitted to a swirling motion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details
    • F23D14/84—Flame spreading or otherwise shaping
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Manufacturing & Machinery (AREA)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Furnace Details (AREA)
  • Gas Burners (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Nozzles For Spraying Of Liquid Fuel (AREA)

Abstract

Un inyector multifuncion (10, 11, 12) que comprende una tobera De Laval (20) adaptada para actuar como un quemador a velocidad subsonica o supersonica, combinada con una pluralidad de toberas (31, 32) para combustible y comburente respectivamente, ordenadas en dos anillos concéntricos y coaxiales a dicha tobera De Laval (20) y externamente protegidas por una cavidad de proteccion específicamente conformada (40). Reivindicacion 10: Procedimiento de combustion para el tratamiento metalurgico en un horno de arco eléctrico usando el inyector multifuncion de acuerdo con cualquiera de las reivindicaciones 1 a 9, caracterizado porque genera un componente de velocidad circunferencial y tangencial para la inyeccion externa de comburente y combustible, realizando los siguiente pasos: actuando como un quemador con una tobera De Laval subsonica (20) con mezclado rápido de gas de combustion y dirigido a obtener una llama ancha capaz de calentar los aglomerados de chatarra ubicados frente a la misma en forma rápida y eficiente; actuando como un quemado con una tobera De Laval supersonica con una llama concentrada de muchos pulsos dirigido a cortar la chatarra y por lo tanto a romper las formaciones de conglomerados frente al inyector multifuncion; actuando como un inyector de oxígeno a velocidad supersonica con una zona supersonica extendida tanto como 70 veces el diámetro de la abertura de la tobera De Laval, usando un método de envuelta para confinar lateralmente a la llama, y bajo estas condiciones es capaz de inyectar oxígeno directamente en el bano de metal líquido.A multifunction injector (10, 11, 12) comprising a Devalval nozzle (20) adapted to act as a subsonic or subsonic speed burner, combined with a plurality of nozzles (31, 32) for fuel and oxidizer respectively, arranged in two concentric and coaxial rings to said Devalval nozzle (20) and externally protected by a specifically shaped protection cavity (40). Claim 10: Combustion process for metallurgical treatment in an electric arc furnace using the multifunction injector according to any of claims 1 to 9, characterized in that it generates a circumferential and tangential velocity component for the external injection of oxidizer and fuel, performing the following steps: acting as a burner with a subsonic De Laval nozzle (20) with rapid combustion gas mixing and aimed at obtaining a wide flame capable of heating scrap agglomerates located in front of it quickly and efficiently; acting as a burnt with a supersonic De Laval nozzle with a concentrated flame of many pulses aimed at cutting the scrap and therefore breaking the conglomerate formations in front of the multifunction injector; acting as an oxygen injector at its own speed with an extended area as much as 70 times the diameter of the opening of the De Laval nozzle, using a wrapping method to confine the flame laterally, and under these conditions it is capable of injecting oxygen directly in the bath of liquid metal.

ARP060100570A 2005-02-18 2006-02-17 A MULTIFUNCTION INJECTOR INTENDED FOR COMBUSTION IN THE METALLURGICAL TREATMENT OF IRON IN AN ELECTRIC ARC OVEN AND COMBUSTION PROCEDURE AR052295A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT000241A ITMI20050241A1 (en) 2005-02-18 2005-02-18 MULTIFUNCTIONAL INJECTOR AND ITS COMBUSTION PROCEDURE FOR METALLURGICAL TREATMENT IN AN ELECTRIC ARC FURNACE

Publications (1)

Publication Number Publication Date
AR052295A1 true AR052295A1 (en) 2007-03-07

Family

ID=36407896

Family Applications (1)

Application Number Title Priority Date Filing Date
ARP060100570A AR052295A1 (en) 2005-02-18 2006-02-17 A MULTIFUNCTION INJECTOR INTENDED FOR COMBUSTION IN THE METALLURGICAL TREATMENT OF IRON IN AN ELECTRIC ARC OVEN AND COMBUSTION PROCEDURE

Country Status (14)

Country Link
US (1) US7611563B2 (en)
EP (1) EP1848927B1 (en)
JP (1) JP5336090B2 (en)
KR (1) KR20070105333A (en)
CN (1) CN101120210A (en)
AR (1) AR052295A1 (en)
BR (1) BRPI0607615A2 (en)
CA (1) CA2597356A1 (en)
IT (1) ITMI20050241A1 (en)
MX (1) MX2007010022A (en)
RU (1) RU2007131076A (en)
TW (1) TW200639362A (en)
WO (1) WO2006087189A1 (en)
ZA (1) ZA200706810B (en)

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US20110127701A1 (en) * 2009-11-30 2011-06-02 Grant Michael G K Dynamic control of lance utilizing co-flow fluidic techniques
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US10081091B2 (en) * 2015-06-12 2018-09-25 Postech Academy-Industry Foundation Nozzle, device, and method for high-speed generation of uniform nanoparticles
US10677458B2 (en) * 2016-04-12 2020-06-09 The Board Of Trustees Of The University Of Alabama Combustor assembly for low-emissions and alternate liquid fuels
US11047570B2 (en) * 2016-11-03 2021-06-29 Berry Metal Company Furnace burner
US10870899B2 (en) * 2016-11-03 2020-12-22 Berry Metal Company Fluid assisted particle injector
MY197759A (en) * 2017-04-26 2023-07-13 Linde Gmbh Method and burner for heating a furnace for metal processing
US20180355792A1 (en) * 2017-06-09 2018-12-13 General Electric Company Annular throats rotating detonation combustor
FR3075931B1 (en) * 2017-12-21 2020-05-22 Fives Pillard BURNER AND COMPACT BURNER SET
JP6720245B2 (en) * 2018-04-20 2020-07-08 大陽日酸株式会社 Burner and heating method using burner
CN110354795B (en) * 2019-05-31 2020-11-20 广州汇富研究院有限公司 Gas nozzle, gas reaction equipment and gas hydrolysis reaction method
CN110193285B (en) * 2019-07-12 2024-06-21 中电华创(苏州)电力技术研究有限公司 Ammonia injection mixed flow device of SCR denitration system
DE102021200059A1 (en) * 2020-08-03 2022-02-03 Sms Group Gmbh Process for the simultaneous injection of a fuel gas and an oxygen-rich gas into a unit
CN218983545U (en) * 2022-12-14 2023-05-09 江苏乐希激光装备有限公司 Composite nozzle for flame-assisted laser cutting
CN116697353A (en) * 2023-06-21 2023-09-05 内蒙古科技大学 A low-nitrogen burner for industrial kilns
CN118705617B (en) * 2024-08-30 2024-11-19 岳阳远大热能设备有限公司 An industrial gas burner for high temperature metallurgical furnaces to resist splashing

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Also Published As

Publication number Publication date
CA2597356A1 (en) 2006-08-24
ITMI20050241A1 (en) 2006-08-19
EP1848927A1 (en) 2007-10-31
CN101120210A (en) 2008-02-06
TW200639362A (en) 2006-11-16
US7611563B2 (en) 2009-11-03
ZA200706810B (en) 2009-02-25
BRPI0607615A2 (en) 2009-09-22
WO2006087189A1 (en) 2006-08-24
KR20070105333A (en) 2007-10-30
EP1848927B1 (en) 2016-12-21
US20080134838A1 (en) 2008-06-12
RU2007131076A (en) 2009-03-27
JP5336090B2 (en) 2013-11-06
MX2007010022A (en) 2007-10-16
JP2008534895A (en) 2008-08-28

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